The SANE API defines the sane_control_option as:
SANE_Status sane_control_option (SANE_Handle h, SANE_Int n,
SANE_Action a, void *v,
SANE_Int * i);
Where the argument i is used to convey information back to the frontend.
How do I tell the front end to reload options (SANE_INFO_RELOAD_OPTIONS)
when it supplies a null argument for i?
I want to have the user set the y resolution and have the x resolution
automatically update correspondingly. This works for xscanimage, but
not xsane.
regards,
Fred Odendaal
